Cuban shortstop Aledmys Diaz has drawn interest from multiple MLB teams this winter, but his situation just got a bit more complicated. According to Ben Badler of Baseball America, MLB is currently investigating his age.

At issue is that Diaz is presenting himself as a 23-year-old born on January 8, 1990. However, one report suggests that he was born on August 1, 1990, which would make him 22. There is also a roster for the 2010 Pan-American games which says he was born in 1991.

Whether Diaz is 23 or younger is pretty significant if you consider that MLB teams are now limited by an international spending cap. It’s $2.9 million for each team during the 2011-2012 international spending period. However, Cuban players with at least three years of professional experience and who are at least 23 are exempt from those bonus pools. In other words, Diaz could stand to make a lot more money if he’s 23 as opposed to 22 or 21.

MLB has yet to rule on whether Diaz is exempt from the bonus pools and they also want him to present an unblocking license from the U.S. Office of Foreign Assets Control (OFAC) before he can sign with a team. In the meantime, Diaz has established residency in Mexico.

Buchholz, 33, was acquired by the Phillies from the Red Sox in December 2016, but he made only two starts before an MRI revealed he had a partial tear of his right flexor pronator mass. He underwent surgery in April and missed the rest of the season.